Command 'module load chan_dahdi' failed.
[Apr  5 20:39:25] WARNING[22309]: pbx.c:7477 ast_register_application2: Already have an application 'DAHDISendKeypadFacility'
[Apr  5 20:39:25] WARNING[22309]: pbx.c:7477 ast_register_application2: Already have an application 'DAHDISendCallreroutingFacility'
[Apr  5 20:39:25] WARNING[22309]: chan_dahdi.c:4504 dahdi_open: Unable to specify channel 1: Invalid argument
[Apr  5 20:39:25] ERROR[22309]: chan_dahdi.c:12710 mkintf: Unable to open channel 1: Invalid argument
here = 0, tmp->channel = 1, channel = 1
[Apr  5 20:39:25] ERROR[22309]: chan_dahdi.c:17414 build_channels: Unable to register channel '1'